Photoelectric conversion module frequency response automatic measurement device and method

Abstract

The invention provides a photoelectric conversion module frequency response automatic measurement device and a method, wherein the photoelectric conversion module frequency response automatic measurement device comprises a laser source, a photoelectric modulator, a 1*N optical beam splitter and a single pole multi-throw switch, wherein the laser source is used for providing continuous optical waves for the photoelectric modulator; the photoelectric modulator is used for modulating the continuous optical waves into a strength modulation optical wave signal in the same frequency with a microwavemodulation signal; the 1*N optical beam splitter is used for performing power distribution for the strength modulation optical wave signal, wherein one path is input into a standard component, and other paths are correspondingly input into each to-be-measured photoelectric conversion module; a vector network analyzer is used for controlling the single pole multi-throw switch to respectively gateelectric signal output of the standard component and each to-be-measured photoelectric conversion module, thus, the current frequency response of the laser source can be obtained through calculation;then, a general frequency response parameter is measured, thus, the frequency response of the to-be-measured photoelectric conversion module of each path can be solved, wherein the frequency responsesof the photoelectric modulator, the 1*N optical beam splitter, the single pole multi-throw switch and the standard component are all known parameters.

Description

technical field [0001] The disclosure belongs to the field of photoelectric detection, and in particular relates to a device and method for automatically measuring the frequency response of a photoelectric conversion module. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The photoelectric conversion module mainly completes the photoelectric conversion of the modulated light wave test signal. It is an important part of the optical receiver of the optical fiber communication system and the frequency response parameter test of photoelectric devices. Its frequency response, group delay and other parameters are important to measure the performance. Therefore, in the process of developing and producing photoelectric conversion modules, it is necessary to strictly test its frequency response and other parameters. [0004] The inventors found t...

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Problems solved by technology

[0005] In order to solve the frequency response parameter measurement of batch photoelectric conversion modules in the production line, solve the problems of batch module testing one by one, frequency point testing, repeated calibration, and low efficiency, the first aspect of the present disclosure provides a photoelectric conversion module frequency response automatic The measuring device is completely suitable for frequency response measurement of batches of photoelectric conversion modules. When it is necessary to replace the DUT, it is not necessary to perform electrical calibration and optical path calibration again, eliminating the cumbersome steps of frequently plugging and unplugging cables; it can completely realize photoelectric conversion. The automatic measurement and data storage of the conversion module eliminates the need for operator comparison analysis and calculation, which greatly reduces the skill requirements of the operator during the measurement process

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